CN115073111A - High-heat-insulation fireproof aluminum silicate fiberboard and preparation method thereof - Google Patents
High-heat-insulation fireproof aluminum silicate fiberboard and preparation method thereof Download PDFInfo
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- CN115073111A CN115073111A CN202210481524.1A CN202210481524A CN115073111A CN 115073111 A CN115073111 A CN 115073111A CN 202210481524 A CN202210481524 A CN 202210481524A CN 115073111 A CN115073111 A CN 115073111A
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- aluminum silicate
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- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 title claims abstract description 102
- 239000011094 fiberboard Substances 0.000 title claims abstract description 64
- 238000009413 insulation Methods 0.000 title claims abstract description 21
- 238000002360 preparation method Methods 0.000 title claims abstract description 20
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 80
- 239000000843 powder Substances 0.000 claims abstract description 77
- 239000002893 slag Substances 0.000 claims abstract description 44
- 239000000835 fiber Substances 0.000 claims abstract description 41
- 229910052742 iron Inorganic materials 0.000 claims abstract description 40
- 238000011049 filling Methods 0.000 claims abstract description 38
- 239000002131 composite material Substances 0.000 claims abstract description 31
- 239000002699 waste material Substances 0.000 claims abstract description 28
- 239000002994 raw material Substances 0.000 claims abstract description 10
- 239000011230 binding agent Substances 0.000 claims description 29
- 238000003756 stirring Methods 0.000 claims description 24
- 238000001354 calcination Methods 0.000 claims description 16
- 239000000203 mixture Substances 0.000 claims description 16
- 239000002002 slurry Substances 0.000 claims description 14
- 239000010440 gypsum Substances 0.000 claims description 13
- 229910052602 gypsum Inorganic materials 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 13
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 claims description 12
- 239000010436 fluorite Substances 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 238000000498 ball milling Methods 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 7
- 230000002265 prevention Effects 0.000 claims description 5
- 238000007493 shaping process Methods 0.000 claims description 4
- 229920001587 Wood-plastic composite Polymers 0.000 claims description 3
- 238000007873 sieving Methods 0.000 claims description 3
- 239000011155 wood-plastic composite Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 7
- 238000005452 bending Methods 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract description 3
- 238000001125 extrusion Methods 0.000 abstract description 3
- 238000004321 preservation Methods 0.000 abstract description 3
- 239000012774 insulation material Substances 0.000 abstract description 2
- 230000001070 adhesive effect Effects 0.000 abstract 3
- 239000000853 adhesive Substances 0.000 abstract 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 abstract 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract 1
- 229910052791 calcium Inorganic materials 0.000 abstract 1
- 239000011575 calcium Substances 0.000 abstract 1
- 238000000465 moulding Methods 0.000 abstract 1
- 229910052710 silicon Inorganic materials 0.000 abstract 1
- 239000010703 silicon Substances 0.000 abstract 1
- 239000000919 ceramic Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 4
- 229910000323 aluminium silicate Inorganic materials 0.000 description 4
- 239000007767 bonding agent Substances 0.000 description 4
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 3
- 239000005995 Aluminium silicate Substances 0.000 description 2
- 235000012211 aluminium silicate Nutrition 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 239000012779 reinforcing material Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011812 mixed powder Substances 0.000 description 1
- 239000002296 pyrolytic carbon Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Building Environments (AREA)
Abstract
The invention relates to the technical field of heat preservation and insulation materials, in particular to a high heat insulation fireproof type aluminum silicate fiber board and a preparation method thereof, waste slag composite adhesive and iron ore powder are adopted as filling powder prepared by the aluminum silicate fiber board, the powder form is adopted for adding and utilizing, the filling powder can be fully dispersed among aluminum silicate fibers to the utmost extent, the waste slag composite adhesive is compounded by silicon resource slag and calcium resource slag, a structure with stronger adhesive property can be formed among the aluminum silicate fibers after extrusion molding, simultaneously, the defect of poor toughness of the obtained aluminum silicate fiber board caused by excessive filling powder is avoided by combining proper control of the raw material quantity ratio, the bending strength of the aluminum silicate fiber board is greatly improved, and the filling and gel molding of gaps among the aluminum silicate fibers are realized by adding the filling powder, the fireproof and heat insulation effects are improved.
Description
Technical Field
The invention relates to the technical field of heat preservation and insulation materials, in particular to a high-heat-insulation fireproof aluminum silicate fiberboard and a preparation method thereof.
Background
The aluminium silicate fiber board has excellent performance of aluminium silicate fiber cotton, excellent toughness and strength, and may be cut into various shapes. At present, the strength of the aluminum silicate fiber board at high temperature is improved by adding inorganic binders such as silica sol and alumina sol, but in the drying process, the silica sol and the alumina sol can migrate along with the volatilization of water from inside to outside, so that the inorganic binders hardly exist in the board, the strength of the board at high temperature is poor, the board is in a loose state, and the service life of the board is short.
The prior art has made corresponding studies on the strength improvement of the aluminum silicate fiber board in a high temperature environment, for example: the patent No. 2014100656542 composite material of carbon and aluminum silicate ceramic fiber and its preparation method disclose an aluminum silicate ceramic fiber board and composite pyrolytic carbon, wherein the aluminum silicate ceramic fiber board is composed of aluminum silicate ceramic fiber, filler, high temperature binder and reinforcing material, and is sintered and shaped after extrusion molding, and the reinforcing material is used to reinforce the strength of the aluminum silicate ceramic fiber board. For another example: an aluminum silicate fiberboard with patent number 201611104616.9 and a preparation method thereof disclose that aluminum silicate fiber, organic bonding agent, inorganic bonding agent and glass fiber powder are used for composite preparation, wherein the adopted organic bonding agent is starch and/or cellulose, the inorganic bonding agent is silica sol and/or alumina sol, and the glass fiber powder is used as a reinforcing auxiliary agent to realize high temperature resistant strength enhancement, so that the compressive strength after calcining for 2 hours at 800 ℃ reaches 0.13-0.16 MPa.
However, the application scenario of the aluminum silicate fiber board is generally in a high-temperature and high-heat environment, and not only the strength, toughness and other properties of the aluminum silicate fiber board but also the high-temperature resistance and the manufacturing cost of the aluminum silicate fiber board need to be considered. Although the strength of the product obtained by the preparation process of the aluminum silicate fiber board in the prior art is improved to a certain extent, the strength is still not ideal enough, and therefore, how to reduce the manufacturing cost of the aluminum silicate fiber board and improve the strength and the high temperature and high heat resistance of the aluminum silicate fiber board becomes a direction continuously pursued by the technical personnel in the field.
Based on this, the present researchers have been on the basis of production practice and research of the aluminum silicate fiber board for a long time, and provide a novel aluminum silicate fiber board and a preparation process thereof.
Disclosure of Invention
In order to solve the technical problems in the prior art, the invention provides a high-heat-insulation fireproof aluminum silicate fiberboard and a preparation method thereof.
The method is realized by the following technical scheme:
the high-heat-insulation fireproof aluminum silicate fiberboard is prepared from the following raw materials in parts by weight: 5-10 parts of aluminum silicate fiber, 0.7-1 part of waste slag composite binder and 1-2 parts of iron ore powder; the waste slag composite binder is powder which is prepared by mixing fluorite tailing slag and alpha-gypsum and performing ball milling, and the balance of the powder which is sieved by an 800-mesh sieve is less than 3%.
The waste slag composite binder and the iron ore powder are used as the filling powder prepared from the aluminum silicate fiber board, and the powder is added and utilized, so that the filling powder can be fully dispersed among aluminum silicate fibers, the waste slag composite binder is formed by compounding siliceous resource slag and calcareous resource slag, a structure with high bonding performance can be formed among the aluminum silicate fibers after extrusion forming, meanwhile, the defect of poor toughness of the obtained aluminum silicate fiber board caused by excessive filling powder is avoided by combining proper control of the raw material quantity ratio, the folding strength of the aluminum silicate fiber board is greatly improved, and the filling powder is added, so that the filling and gel forming of gaps among the aluminum silicate fibers are realized, and the fireproof and heat-insulation effects are improved.
In order to improve the comprehensive performance of the aluminum silicate fiberboard, the iron ore powder is preferably powder obtained by ball milling iron ore by a ball mill and sieving the iron ore with an 800-mesh sieve to ensure that the balance of the sieve is less than 3 percent. More preferably, the iron content of the iron ore powder is less than or equal to 20 percent.
In order to avoid the influence of the excessive using amount of the gypsum on the strength of the aluminum silicate fiber board, the mass ratio of the fluorite tailing slag to the alpha-gypsum is preferably 1: 0.01-0.05. More preferably, the mass ratio of the fluorite tailing slag to the alpha-gypsum is 1: 0.03.
Preferably, the raw material components comprise the following components in parts by mass: 7 parts of aluminum silicate fiber, 0.8 part of waste slag composite binder and 1 part of iron ore powder.
The invention also aims to provide a preparation method of the high-heat-insulation fireproof aluminum silicate fiberboard, which comprises the following steps:
(1) adding water into the aluminum silicate fibers, mixing and stirring to prepare a mixture;
(2) mixing and stirring the waste slag composite binder and iron ore powder into filling powder;
(3) adding the filling powder into the mixture in a stirring and adding mode, wherein the adding time of the filling powder into the mixture is at least 30min, and after the adding is finished, continuously stirring for 5min to obtain slurry;
(4) compacting the slurry to prepare a plate shape, and drying and shaping to prepare the wood-plastic composite board.
After aluminum silicate fibers are added with water to prepare a mixture, the waste slag composite binder and iron ore powder are compounded into filling powder, the filling powder is added into the mixture and stirred and mixed to prepare slurry, the filling compactness of the filling powder among the aluminum silicate fibers is fully ensured, the filling effect is improved, after the filling powder is compacted into a plate, the bending and compression strength of the aluminum silicate fibers is greatly improved after a drying-shaping process, the fire-insulating and heat-insulating functions are enhanced, and the application range of the aluminum silicate fiber plate in the field of fire prevention and heat preservation is greatly expanded.
In order to ensure the sufficiency of uniform stirring, reduce the difficulty of stirring and avoid the defect of high forming difficulty caused by excessive moisture, the step (1) preferably comprises the steps of mixing aluminum silicate fibers and water in a mass ratio of 1-3: 100; and/or the step (3), wherein the stirring speed is 300 r/min.
In order to adjust the moisture bubble escape rate during the forming process, accelerate the formation efficiency of the viscous slurry after the filling powder is added, and simultaneously, in order to shorten the process production period and reduce the production cost, preferably, the temperature of the step (3) is adjusted to 60-90 ℃ during the stirring process. More preferably, in the step (4), the drying is performed by heating to 200 ℃ at a heating rate of 15 ℃/min for constant temperature treatment for 4h, then keeping the temperature at 600 ℃ for 20min, and then sending into a vacuum calcining furnace, controlling the vacuum degree to be-0.032 MPa, and performing constant temperature calcination treatment at 1000 ℃ for 30 min.
Compared with the prior art, the invention has the technical effects that:
the method adopts the technical scheme that a waste slag composite binder and iron ore powder are mixed to form filling powder, the filling powder is added into a mixture of aluminum silicate fibers and water, and the specific process is combined with the appropriate control of the dosage ratio of the waste slag composite binder, the iron ore powder and the aluminum silicate fibers, so that the flexural strength and the compressive strength of the aluminum silicate fiber board are greatly improved, the heat insulation and fire insulation performance of the aluminum silicate fiber board is enhanced, and the application range of the aluminum silicate fiber board in a high-temperature and high-heat environment is widened.
The fracture test of the aluminum silicate fiber board created by the invention shows that: the fracture strength of the aluminum silicate fiber board is more than or equal to 9 MPa; and the compressive strength under normal temperature and normal pressure is more than or equal to 58 MPa. Therefore, the aluminum silicate fiberboard produced by the invention has better flexural strength and compressive strength, good toughness and high strength. According to the high-temperature-resistant fire-proof test of the aluminum silicate fiber board (with the specification of 10cm multiplied by 2cm) obtained by the invention, during the test, a flame gun with the temperature of 1000 ℃ is adopted to calcine the lower surface of the aluminum silicate fiber board, hand touch induction is adopted on the upper surface of the aluminum silicate fiber board until the hand scalding occurs, and the heat transfer time and the burning pit depth of the lower surface at the position where the lower surface is calcined are counted, so that the following results are obtained: the hand induction temperature of the upper surface is obviously increased when the calcination is carried out for 3 hours, but the hand scalding phenomenon does not occur until the calcination is continued for about 10min, and the hand scalding phenomenon does not occur; meanwhile, the depth of the burning pit is measured at the position of the calcining position to obtain: the burning pit is less than 1 cm; therefore, the aluminum silicate fiber board has extremely high fireproof and heat-insulating effects and can be applied to various fireproof, heat-insulating and heat-insulating fields.
The invention has simple process steps and short process flow, and greatly reduces the preparation cost of the aluminum silicate fiberboard.
Detailed Description
The technical solution of the present invention is further defined below with reference to the specific embodiments, but the scope of the claims is not limited to the description.
In some embodiments, the high heat insulation and fire prevention type aluminum silicate fiberboard is prepared from the following raw material components in parts by weight: 5-10 parts of aluminum silicate fiber, 0.7-1 part of waste slag composite binder and 1-2 parts of iron ore powder; the waste slag composite binder is powder which is prepared by mixing fluorite tailing slag and alpha-gypsum and performing ball milling, and the balance of the powder which is sieved by an 800-mesh sieve is less than 3%. The alumina silicate fiber is known to those skilled in the art, and is not particularly limited.
In some embodiments, the iron ore fines are powders obtained by ball milling iron ore in a ball mill and passing the iron ore through an 800 mesh screen with a balance of less than 3%. In addition, in some embodiments, the iron ore powder has an iron content of 20% or less.
In certain embodiments, the mass ratio of fluorite tailing slag to alpha-gypsum is 1:0.01-0.05, such as in an excellent protocol selected from, but not limited to, 1:0.01, 1:0.02, 1:0.03, 1:0.04, 1:0.05, and the like.
In certain embodiments, the raw material components comprise, by mass: 7 parts of aluminum silicate fiber, 0.8 part of waste slag composite binder and 1 part of iron ore powder.
The invention also provides a preparation method of the high-heat-insulation fireproof aluminum silicate fiberboard in certain embodiments, and the preparation process is summarized as follows: the aluminum silicate fiber water-waste slag composite binder is mixed with iron ore powder to form filling powder, the filling powder is added with the aluminum silicate fiber to be uniformly stirred, formed, dried and shaped, and the preparation method specifically created according to the invention comprises the following steps in a more excellent embodiment:
(1) adding water into the aluminum silicate fibers, mixing and stirring to prepare a mixture; (2) mixing and stirring the waste slag composite binder and iron ore powder into filling powder; (3) adding the filling powder into the mixture in a stirring and adding mode, wherein the adding time of the filling powder into the mixture is at least 30min, and after the adding is finished, continuously stirring for 5min to obtain slurry; (4) compacting the slurry to prepare a plate shape, and drying and shaping to prepare the wood-plastic composite board.
In certain embodiments, in step (1), the mass ratio of the aluminum silicate fibers to the water is 1-3: 100; and/or the step (3), wherein the stirring speed is 300 r/min.
In certain embodiments, the temperature of step (3), during stirring, is adjusted to 60-90 ℃.
In some embodiments, in the step (4), the drying is performed by heating to 200 ℃ at a heating rate of 15 ℃/min for constant temperature treatment for 4 hours, then keeping the temperature at 600 ℃ for 20 minutes, and then sending into a vacuum calcining furnace, controlling the vacuum degree to be-0.032 MPa, and performing constant temperature calcining treatment at 1000 ℃ for 30 minutes.
By adopting the preparation process, the filling powder can be fully dispersed in the mixture of the aluminum silicate fibers and water, the filling powder can be adhered to and filled in gaps among the aluminum silicate fibers, the bonding property is enhanced after compaction, the comprehensive performance of the aluminum silicate fiber board is improved, the flexural strength and the compressive strength of the aluminum silicate fiber board are improved, the fireproof and heat-insulation effects of the aluminum silicate fiber board are improved, and the applicable range of the aluminum silicate fiber board is widened.
In order to further illustrate the invention, we will now fully describe the corresponding aspects of the invention in connection with the schemes developed during the actual research.
Test 1: the selection and preparation of raw material components.
The aluminosilicate fibers used in this test were ordinary aluminosilicate fibers directly commercially available; the waste slag composite binder is mixed by fluorite tailing slag and alpha-gypsum according to the mass ratio of 1:0.03, and then sent into a ball mill for ball milling, and the mixed powder is sieved by an 800-mesh sieve, wherein the balance of the sieve is less than 3%; the iron ore powder is powder which is obtained by crushing iron ore with the iron content of 18.3 percent, feeding the iron ore into a ball mill for ball milling, and sieving the iron ore powder by a 800-mesh sieve to obtain the powder with the sieve residue of less than 3 percent.
The preparation process comprises the following steps:
(1) mixing aluminum silicate fibers and water according to a mass ratio of 3:100 to form a mixture;
(2) mixing the waste slag composite binder and iron ore powder into filling powder;
(3) adding the filling powder into the mixture, stirring while adding at a stirring speed of 300r/min, wherein when the filling powder begins to be added, the temperature of the mixture is 60 ℃, the filling powder is added within 30min, and after the filling powder is added, stirring at a continuous stirring speed for 5min to obtain slurry;
(4) and extruding and compacting the obtained slurry into a plate with the specification of 10cm multiplied by 2cm, sending the plate into a dryer after the forming is finished, controlling the heating speed to be 15 ℃/min, heating to 200 ℃ for constant temperature treatment for 4h, keeping the temperature at 600 ℃ for 20min, sending the plate into a vacuum calcining furnace, controlling the vacuum degree to be-0.032 MPa, carrying out constant temperature calcination treatment at 1000 ℃ for 30min, and naturally cooling to obtain the material.
Example 1
5kg of aluminum silicate fiber, 0.7kg of waste slag composite binder and 1kg of iron ore powder.
Example 2
10kg of aluminum silicate fiber, 1kg of waste slag composite binder and 2kg of iron ore powder.
Example 3
8kg of aluminum silicate fiber, 0.9kg of waste slag composite binder and 1.5kg of iron ore powder.
Example 4
7kg of aluminum silicate fiber, 0.8kg of waste slag composite binder and 1kg of iron ore powder.
Test 2: research on preparation process.
Example 5
In example 4, the same as example 4 except that the aluminum silicate fiber, the waste slag composite binder, and the iron ore powder were directly mixed, mixed with water to prepare a slurry, and then the slurry was compacted to prepare a plate shape, and then the plate shape was dried and formed.
Example 6
On the basis of example 4, the filling powder is poured into the slurry at one time and stirred, and the slurry is prepared, and the rest is the same as example 4.
Test 3: the raw material proportion of the waste slag composite binder is researched.
Example 7
Based on example 4, the mass ratio of alpha-gypsum to fluorite tailing slag was 1:1, and the other examples were the same as example 4.
Example 8
Based on example 4, the mass ratio of alpha-gypsum to fluorite tailing slag was 1:0.1, and the other examples were the same as example 4.
Example 9
On the basis of example 4, fluorite tailing slag was directly used instead of α -gypsum, and the rest was the same as example 4.
The aluminum silicate fiber boards prepared in the examples 1 to 9 are used as samples to be detected, and the flexural strength, the compressive strength, the heat insulation and the fire resistance of the samples are detected; five sets of data were tested per example and averaged, the results of which are shown in table 1 below.
TABLE 1 test results of comprehensive performance indexes of aluminum silicate fiber board
As can be seen from the data in Table 1, the aluminum silicate fiber board obtained by the invention has good bending and compression strength and toughness, and meanwhile, through a fireproof and heat insulation test, a flame gun calcination test at 1000 ℃ is adopted, so that the time from calcination heat conduction to occurrence of obvious temperature change on the surface reaches about 3 hours, and the depth of a burning pit at the time is less than or equal to 1cm, thereby greatly improving the fireproof and heat insulation effect.
The invention creates a method for measuring the burning pit depth by researchers, which is to scrape burning marks at the burning position by a flame gun by a knife until obvious burning pits can not be seen, and then measure the scraped pits.
In addition, in order to know the comprehensive performance change of the aluminum silicate fiber board prepared by the invention after being calcined at high temperature, the researchers also perform the following tests: the aluminum silicate fiber board prepared according to the example 4 was calcined at 1000 ℃ for 3 hours, and then the flexural and compressive strength was measured, and the results showed that: after calcining at 1000 ℃ for 3 hours, the flexural strength is 0.13MPa, and the compressive strength is 0.34 MPa; therefore, after the aluminum silicate fiber board is subjected to integral calcination treatment at a higher temperature for 3 hours, a certain flexural and compressive strength can still be maintained, and the high-temperature resistance strength of the aluminum silicate fiber board is fully guaranteed.
The invention can be realized by conventional technical means according to the prior art or common general knowledge well known by the technical personnel in the field.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. The high-heat-insulation fireproof aluminum silicate fiberboard is characterized by being prepared from the following raw materials in parts by weight: 5-10 parts of aluminum silicate fiber, 0.7-1 part of waste slag composite binder and 1-2 parts of iron ore powder; the waste slag composite binder is powder which is prepared by mixing fluorite tailing slag and alpha-gypsum and performing ball milling, and the balance of the powder which is sieved by an 800-mesh sieve is less than 3%.
2. The highly heat-insulating and fire-proof type aluminum silicate fiberboard of claim 1, wherein the iron ore powder is powder obtained by ball milling iron ore with a ball mill and sieving with an 800-mesh sieve to obtain a sieve residue of less than 3%.
3. The highly heat-insulating and fire-proof type aluminum silicate fiberboard of claim 1 or 2, wherein the iron ore powder contains iron at a rate of 20% or less.
4. The highly heat-insulating and fire-preventing type aluminum silicate fiber board according to claim 1, wherein the mass ratio of fluorite tailing slag to α -gypsum is 1: 0.01-0.05.
5. The highly heat-insulating and fire-preventing type aluminum silicate fiber board according to claim 1 or 4, wherein the mass ratio of fluorite tailing slag to α -gypsum is 1: 0.03.
6. The high heat insulation and fire prevention type aluminum silicate fiberboard according to claim 1, wherein the raw material components comprise, by mass: 7 parts of aluminum silicate fiber, 0.8 part of waste slag composite binder and 1 part of iron ore powder.
7. The method for preparing the high heat insulation and fire prevention type aluminum silicate fiberboard according to any one of claims 1 to 6, which comprises the following steps:
(1) adding water into the aluminum silicate fibers, mixing and stirring to prepare a mixture;
(2) mixing and stirring the waste slag composite binder and iron ore powder into filling powder;
(3) adding the filling powder into the mixture in a stirring and adding mode, wherein the adding time of the filling powder into the mixture is at least 30min, and after the adding is finished, continuously stirring for 5min to obtain slurry;
(4) compacting the slurry to prepare a plate shape, and drying and shaping to prepare the wood-plastic composite board.
8. The preparation method of the high heat insulation and fire prevention type aluminum silicate fiberboard as claimed in claim 7, wherein in the step (1), the mass ratio of the aluminum silicate fiber to the water is 1-3: 100; in the step (3), the stirring speed is 300 r/min.
9. The method for preparing the highly heat-insulating and fire-proof type aluminum silicate fiberboard according to claim 7 or 8, wherein the temperature of the step (3) is adjusted to 60 to 90 ℃ during the stirring process.
10. The method for preparing the highly heat-insulating and fireproof aluminum silicate fiberboard as claimed in claim 7, wherein in the step (4), the drying is performed by heating to 200 ℃ at a heating rate of 15 ℃/min for constant temperature treatment for 4 hours, then keeping the temperature at 600 ℃ for 20 minutes, and then feeding into a vacuum calcining furnace, wherein the vacuum degree is controlled to be-0.032 MPa, and the constant temperature calcining treatment is performed at 1000 ℃ for 30 minutes.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108609988A (en) * | 2018-05-22 | 2018-10-02 | 贵州省建筑材料科学研究设计院有限责任公司 | A method of producing air-entrained concrete building block using processing of fluorspar ores waste residue-quartz tailings |
| CN109437686A (en) * | 2018-11-29 | 2019-03-08 | 唐山海源实业有限公司 | A kind of high density aluminosilicate fiberboard and its production method |
| CN112374818A (en) * | 2020-11-27 | 2021-02-19 | 山东鲁阳节能材料股份有限公司 | High-density ceramic fiber board with use temperature of more than 1100 ℃ and preparation method thereof |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108609988A (en) * | 2018-05-22 | 2018-10-02 | 贵州省建筑材料科学研究设计院有限责任公司 | A method of producing air-entrained concrete building block using processing of fluorspar ores waste residue-quartz tailings |
| CN109437686A (en) * | 2018-11-29 | 2019-03-08 | 唐山海源实业有限公司 | A kind of high density aluminosilicate fiberboard and its production method |
| CN112374818A (en) * | 2020-11-27 | 2021-02-19 | 山东鲁阳节能材料股份有限公司 | High-density ceramic fiber board with use temperature of more than 1100 ℃ and preparation method thereof |
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Application publication date: 20220920 |